期刊
ACS CATALYSIS
卷 11, 期 15, 页码 9151-9158出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.1c02450
关键词
enantioselective C-H activation; axial chirality; maleimide; alkylation; desymmetrization
资金
- NSFC [21525208]
- SNNU
This report describes a method for introducing distally disposed axial and central chirality via rhodium-catalyzed C-H alkylation of benzamides using N-arylmaleimide as the alkylating reagent. The process features excellent enantio- and diastereoselectivity, broad substrate scope, and mild reaction conditions. Chiral induction is achieved through the judicious choice of a chiral rhodium cyclopentadienyl catalyst.
In this report, distally disposed axial and central chirality has been installed in a synergistic fashion via rhodiumcatalyzed C-H alkylation of benzamides using N-arylmaleimide as the alkylating reagent, in which the enantio- and diastereo-determining steps are merged into a single one. The coupling system features mild reaction conditions, broad substrate scope, and excellent enantio- and diastereoselectivity. The chiral induction has been enabled by judicious choice of a chiral rhodium cyclopentadienyl catalyst that serves to control both the orientation of the olefin unit and the prochiral C-N bond.
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